Fig 2.

Forest plots of the difference in sensitivity and specificity estimates at cutoff 10 between PHQ-8 and PHQ-9 among all studies^a (N Studies = 54^b; N Participants = 16,742; N major depression = 2,097)^c

^a τ² for the difference of sensitivity and specificity were both <0·001.

^b The reference numbers refer to Supplementary Material References.

^c Amoozegar, 2017 [1] and Lambert, 2015 [13] were unpublished at the time of the electronic database search then subsequently published.